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AMD Radeon HD 7640G + HD 7670M Dual Graphics

The AMD Radeon HD 7640G + HD 7670M Dual Graphics is the combination of a integrated AMD Radeon HD 7640G APU processor graphics card and a dedicated entry level AMD Radeon HD 7670M graphics card in CrossFire combination. It is called AMD Dual Graphics or asymmetric CrossFire and uses AFR (Alternate Frame Rendering) to render different frames on the two graphic cores. Therefore the combination also suffers from micro stuttering (different spaces between two images lead to stuttering altough the framerate is high enough for fluent gaming with only one GPU).

The performance of the Dual Graphics solution depends greatly on the driver support for the used games. In some games the performance may even degrade by 10-15% compared to using only the APU graphics card. Therefore, due to the micro stuttering and performance problems, Dual Graphics may impose more problems than bring performance gains. Only in a best case scenario the performance is similar to the GeForce GT 635M.

The features like PureVideo HD (UVD3) or OpenCL support are similar to the two graphics cards.

As both graphics cards are rendering frames, the power consumption is clearly higher than using only one GPU.

ManufacturerAMD
Radeon HD 7600M Series

Radeon HD 7690M XT

480 @ 725 MHz128 Bit @ 3600 MHz

Radeon HD 7690M

480 @ 600 - 725 (Boost) MHz128 Bit @ 3600/1800 MHz

Radeon HD 7660G + HD 7670M Dual Graphics

862 @ 685 / 600 MHz128 Bit @ 1800 MHz
Radeon HD 7640G + HD 7670M Dual Graphics 736 @ 655 / 600 MHz128 Bit @ 1800 MHz

Radeon HD 7520G + HD 7670M Dual Graphics

736 @ 655 / 600 MHz128 Bit @ 1800 MHz

Radeon HD 7670M

480 @ 600 MHz128 Bit @ 1800 MHz

Radeon HD 7650M

480 @ 450 - 550 (Boost) MHz128 Bit @ 1800 MHz

Radeon HD 7630M

480 @ 450 MHz128 Bit @ 1800 MHz

Radeon HD 7640G + HD 7610M Dual Graphics

656 @ 655 / 450 MHz128 Bit @ 1800 MHz

Radeon HD 7610M

400 @ 450 MHz128 Bit @ 1600 MHz
ArchitectureTerascale 3
Pipelines736 - unified
Core Speed *655 / 600 MHz
Memory Speed *1800 MHz
Memory Bus Width128 Bit
Shared Memoryyes
DirectXDirectX 11, Shader 5.0
technology32/40 nm
Notebook Sizemedium sized
Date of Announcement15.05.2012
* The specified clock rates are only guidelines for the manufacturer and can be altered by them.

Benchmarks

3DMark (2013) - Fire Strike Standard Graphics 1920x1080
0% 100%
min: 623      avg: 666.3 (6%)     median: 623 (5%)     max: 753 Points
3DMark (2013) - Cloud Gate Standard Graphics 1280x720
0% 100%
min: 5715      avg: 6137.7 (8%)     median: 5715 (7%)     max: 6983 Points
3DMark (2013) - Ice Storm Standard Graphics 1280x720
0% 100%
min: 37273      avg: 48281.7 (6%)     median: 53786 (7%)     max: 53786 Points
Unigine Heaven 3.0 - OpenGL, Normal Tessellation, High Shaders 1920x1080
0% 100%
min: 10.6      avg: 10.6 (14%)     median: 10.6 (14%)     max: 10.6 fps
Unigine Heaven 3.0 - DX 11, Normal Tessellation, High Shaders 1920x1080
0% 100%
min: 13.9      avg: 13.9 (10%)     median: 13.9 (10%)     max: 13.9 fps
ComputeMark v2.1 - Normal, Score 1024x600
0% 100%
min: 772      avg: 772 (13%)     median: 772 (13%)     max: 772 Points
LuxMark v2.0 64Bit - Room Scene, OpenCL GPUs-only
0% 100%
min: 145      avg: 145 (9%)     median: 145 (9%)     max: 145 Samples/s
LuxMark v2.0 64Bit - Sala Scene, OpenCL GPUs-only
0% 100%
min: 342      avg: 342 (14%)     median: 342 (14%)     max: 342 Samples/s
3DMark 11 - Performance GPU 1280x720
0% 100%
min: 1629      avg: 1671 (10%)     median: 1649 (10%)     max: 1757 points
3DMark 11 - Performance 1280x720
0% 100%
min: 1585      avg: 1626.3 (12%)     median: 1628 (12%)     max: 1664 points
3DMark Vantage - P GPU no PhysX 1280x1024
0% 100%
min: 4554      avg: 4811.5 (10%)     median: 4887 (11%)     max: 4918 Points
3DMark Vantage - P Result no PhysX 1280x1024
0% 100%
min: 4696      avg: 4969.8 (13%)     median: 5049 (13%)     max: 5085 Points
3DMark 06
0% 100%
min: 7090      avg: 8121.5 (27%)     median: 8451.5 (28%)     max: 8493 Points
3DMark 05 - Standard 1024x768
0% 100%
min: 10288      avg: 10402.7 (28%)     median: 10288 (28%)     max: 10632 Points
3DMark 03 - Standard 1024x768
0% 100%
min: 21584      avg: 21584 (14%)     median: 21584 (14%)     max: 21584 Points
Cinebench R11.5 - OpenGL 64Bit
0% 100%
min: 17.26      avg: 24.4 (22%)     median: 24.4 (22%)     max: 31.57 Points
Cinebench R10 - Shading 32Bit
0% 100%
min: 4566      avg: 4589 (38%)     median: 4589 (38%)     max: 4612 Points
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card

Game Benchmarks

The following benchmarks stem from our benchmarks of review laptops. The performance depends on the used graphics memory, clock rate, processor, system settings, drivers, and operating systems. So the results don't have to be representative for all laptops with this GPU. For detailled information on the benchmark results, click on the fps number.

Crysis 3

Crysis 3

2013
low 1024x768
28.7  fps      Compare
med. 1366x768
15  fps      Compare
high 1366x768
10.5  fps      Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Dead Space 3
low 1024x768
99.2  fps      Compare
med. 1366x768
45.9  fps      Compare
high 1366x768
35.9  fps      Compare
» With all tested laptops playable in detail settings high.
Hitman: Absolution
low 1024x768
19.9  fps      Compare
med. 1366x768
18.7  fps      Compare
high 1366x768
13.4  fps      Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Fifa 13

Fifa 13

2012
low 1024x768
130.8 133 ~ 132 fps      Compare
med. 1366x768
100.9 108 ~ 104 fps      Compare
high 1366x768
99.4 103 ~ 101 fps      Compare
ultra 1920x1080
65 71 ~ 68 fps      Compare
» With all tested laptops playable in detail settings ultra.
Dirt Showdown
low 1024x768
34.2 37.4 ~ 36 fps      Compare
med. 1366x768
26.7  fps      Compare
high 1366x768
25.5  fps      Compare
» With most tested laptops playable in detail settings low.
Diablo III
low 1024x768
78.5 96 98 ~ 91 fps      Compare
med. 1366x768
74 74 ~ 74 fps      Compare
high 1366x768
65.4 70 ~ 68 fps      Compare
ultra 1920x1080
43.3 48 ~ 46 fps      Compare
» With all tested laptops playable in detail settings ultra.
Anno 2070

Anno 2070

2011
low 1024x768
69 74.9 90 ~ 78 fps      Compare
med. 1366x768
28 31.8 ~ 30 fps      Compare
high 1366x768
19 20.6 ~ 20 fps      Compare
» With all tested laptops playable in detail settings low.
The Elder Scrolls V: Skyrim
low 1280x720
35.1  fps      Compare
med. 1366x768
30.8  fps      Compare
high 1366x768
25.1  fps      Compare
» With all tested laptops playable in detail settings low.
F1 2011

F1 2011

2011
low 800x600
59  fps      Compare
med. 1024x768
37  fps      Compare
» With all tested laptops playable in detail settings med..
Deus Ex Human Revolution
low 1024x768
95.5  fps      Compare
» With all tested laptops playable in detail settings low.
Dirt 3

Dirt 3

2011
low 800x600
70.3  fps      Compare
med. 1024x768
41.3  fps      Compare
» With all tested laptops playable in detail settings med..

For more games that might be playable and a list of all games and graphics cards visit our Gaming List

Notebook reviews with AMD Radeon HD 7640G + HD 7670M Dual Graphics graphics card

Asus K75DE-TY068H: AMD A-Series A8-4500M, 17.3", 3.1 kg
  Review » Review Asus K75DE Notebook

Samsung Serie 3 355E7C-S05DE: AMD A-Series A8-4500M, 17.3", 2.8 kg
  Review » Review Samsung Series 3 355E7C-S05DE Notebook

» Comparison of GPUs
Detailled list of all laptop GPUs with a short description. Classified and sorted by performance.

» Benchmark List
Sortable and restrainable list of all GPUs with benchmarks (e.g. 3DMarks).

» Notebook Gaming List
Which game can be played with my graphics card.

Class 1
GeForce GTX 980
GeForce GTX 590
GeForce GTX 580
Radeon HD 6970
GeForce GTX 570
GeForce GTX 560 Ti
Radeon HD 5850
Radeon HD 7770
Radeon HD 7770
GeForce GTX 460 768MB
Radeon HD 6790
Radeon HD 5770
GeForce GTX 550 Ti
Class 2
GeForce GTS 450
Radeon HD 4850
Class 3
Radeon HD 5670
GeForce GT 240
Radeon R6 M255DX
GeForce GT 430
Radeon HD 5570
GeForce GT 220
Radeon HD 6450 GDDR5
Class 4
Radeon R3 (Mullins/Beema)
Mali-T760 MP6
Class 5
PowerVR GX6450
Radeon HD 4350
GeForce G 107M *
Chrome9HD *
Class 6
unknown *

* Approximate position of the graphics adapter

> Notebook / Laptop Reviews and News > FAQ / Tips / Technics > Comparison of Laptop Graphics Cards > AMD Radeon HD 7640G + HD 7670M Dual Graphics
Author: Klaus Hinum (Update: 2013-01-17)